Means for making inlaid cement blocks



oer. 20,1925. Y 1,557,723

y A. E. PEARsoN mums Pon mmm 1min causar non:

VFild SQP. 7. 1922 Patented Oct. 20, 1925. y

UNITED STATE-S ARTHUR n; rnanson, or Los ANGELEs',-oALIFoRNTA.

MEANS FOBj MAKING- INLAID CEMENT BLOCKS.

Application; leci September To all'wlwm t may concern." f

Be it known that I, ARTHUR E. PEARsON,

e citizen of the United States, anda resident of Los Angeles, in the ycounty of LosAngeles v and State of California, have invented 'new and useful Improvements in Means for Makingfv nlaid Cement Blocks, .of whichV the. following is a speciication.

This invention vrelates to andihas forV a main' object the provision `oifmeansior moulding inlaid cementblocks such as are uliapted to be `usedfor floors, Walls andthe Another object is to Aprovide a 'simple and l5 effective mould embodying separate mould members for thebody of the block andgforV the inlay, .capable of arrangement in suitable geometrie or Yornamental designs Whereby the blocks when moulded set and'hardfened maybe laid edgeto edge,providing ornamental floors: for buildingsV and for vother purposes.

Another' urpose is to provide a separable mould 'of simple design embodying a base vhaving a smooth moulding surface, arbodyy.

*.mould,

mould positioned on the base,and.an inlay mould removably held Within `the body mould andalso positioned on 4the base Whereby the material `forming,the body, of fthe l block may be poured into the body mould around the inlay mould, and. the, material forming the inlays may be poured intofthe inlay mould,y after which the inlay mould is adapted to bevremovedfso that'the ma- ,terial forming the body in the inlays, will unite While still in a plastic state, thus providing a cement block having.. inlays of a different color from the body; andv of any suitablefgeometric 4or ornamental design,

40 .which when moulded on the smoothnsurface of the base will provide a uniforml surface, and the inlays being deep set the body will not bedeaced or removed by use. l

Another objectjisto providemeans for forming inlaid cement blocks ,embodyingthe .use of separate moulds for the inlayandthe body of;v therV blocks, and a base` on which the moulds are adaptedto beheldduring' 'the'.

Y moulding operati'omthe inlay mouldbe'ingk 5,0 sliallower than the body mould and remover ably held therein. v l

Thermaterial of ,which the bodyY is formed. is B-Qilredfnto the body mould 'aroudthe I suliiciently.

7l, 1,922.- vserial No. 586,557.. I l,

.l recesses of the inlay mould as lirst the operation, to tlieflevel of the upperf'edge of the inlay mould,fthereaft er the recesses ofthe inlay mould are. lle'd'vwiththe inlay materialVA and the unfilled: portion ,of the f body mould .isf then. filled lwith the inaterialifor -coverilw the inlays, and asuitable vtool is ,move Y over theup'per edge of the .body mould for .smoothing the `upper surface of the block thus formed, Whichy Sur- .face constitutes they bottom ofa block ',fv'vhen completed.,l The inlay blockv isl Withdrawn y from the body mould priorto the illingfof.

the. body mould,l andthe body mould "may belvvithdravvnas soon as theblock has rs et Other objects may appear asi the description progresses.

I have illustrated a preferred embodiment vof my invention in the accompanying drawings, in which:V y

Fig, lis a; plan view; of a mouldsuitable for use in :carrying out my'impr'ov'ed method of forming inlayV Cement blocks Y Fig. 2f is'a perspective View of a body Figy is .a perspective vin'v'olf` the inlay mould.- f f Fig. lisa, plan of a cement blockformed inthe mouldi Fig, isa vieivof another ofblock formed thereby.. f Y f, l 1 A F'g. flis, a sectional' view yoi the mould prior tothqbeg'linning olf' a block forming operation `land' s process.k l y f,

Fig. 7 's va' :similar section of the same showing the, s'econdfstep in the process. ff

owing 'the first Step` in the Fig. 8 is a similar sectionlghovving the `third step inthe process; and

Fig. 94 is' a similar section showing the final step in the process. I y V New, it will bevunderstood, that, while Ij have shown only' one embodiment'of ,inverni-.ien and one 'ferm or mould.; that the meansshown is ,susceptible t' change rand modifioationfwvith" se pende@ 'Claim ,w Iout doper, ing fiminine SpiritV of'myinvention." The nv'ntonh H a moulding device, embodying' abody' mould M oi any suitable Id, corIfleSponding to the for'ir ofblol;

Qf the inlay mould M including a plurality of geometric or ornamentally formed and arranged recesses and adapted to be supported within the body mould, and a base B having a smooth moulding surface on the upper side thereof for receiving and holding the moulds M and M in position for use.

The body mould M may be of any geometric form such-asV square, round, Ahexagonal, oetagonal or otherwise, and is preferably formed of two mating sections as indicatedy in Figs. 1 and 2. The form of mould shown is of, hexagonal character and is formed of siX side portions, four of which portions are provided with lugs having bores therethrough for receiving dowels removably-held in the base vB so as to position the mould M on said base.V vThe mould M has a central recess formed between the sides and the lower edge e thereof is adapted to rest upon the upper surface of base B when Vin position for use.

The inlay mould M has a plurality of inlay recesses rwhich in the form of device shown are formed by means of hexagonal ribs, uniformly arranged about a common axis, and each of said ribs has radially formed extensions R', R projecting out wardly therefrom and adapted to seat in lthe angles of the sideso-f the mould M, as clearly shown in Fig. 1, so that t-he mould M will at all times be centered in the mould M.

The mould M is substantially narrower than the mould M and corresponds in height to the thickness oftheinlay which may be greater or less than shown. The height of the mould M corresponds to the thickness of the cement block formed thereby, and substantially to the thickness of a floor, but this is immaterial to my invention.' l

Thus, it will be seen that the edges of the .i mould M are separably held together so that when the dowels D are removed Afrom the base, the two halves. may be .drawn out- Wardly fromv the blockv A, also, the mouldV M may be arranged as shown or otherwise,

y for the purpose of centering the same within the mold M, the character of the recesses R and ribs Rioltheir equivalents being such that the said ribs may be readily grasped by the hand for removing the mould M bodily from the plast-ic material which is poured therein and therearound, as shown in Fig. 1.

Of course, it will be understoodv that in some cases the mould M and the recesses R of the mould M may be circular or of other Y geometric, fanciful ,or ornamental form, but

it is essential that the ribs'R and `also the ribspR forming the recesses r should be of minimum thickness so that when the mould M 1s wlth'drawn from 4the plastic material the spaces left by the said ribs will be rapidly and completely filled by the settling of Vthe plastic material therein.

Referring particularly to Figs. 6 to 9 inclusive, it will be observed Vthat in carrying out my improved method for making inlaid cement blocks by means of the mouldfshown and described, the lower edge e of the mould M is first positioned on the upper surface of the base B, as shown in Fig. 6, and the dowels D are inserted in the apertures a of lugs L for holding the mould in position on the base. Thereafter the mould M is positioned within the mould M and is centered therein by means of the ribs R which engage the angles of the sides of mould M.

Inasmuch as the mould M is of lesser height than the mould M and the lower edge of mould M rests upon the base B on which the mould M is mounted, it will be noted that the height of the mould M defines the depth of the inlays on the blocks A, while the portion of the mould M above the upper edge of mould 'M' determines the thickness of the block opposite the inlays.

Now, when the moulds M and M are positioned as shown and described, the plastic material fm, composed of cement, sand, water and possibly other substances which are usually employed in the manufacture of artificial Vstone and cement work, isy poured into the mould M around the recess 1' of the mould M, thus filling all of the spaces including the central space b, with the exception of the'lrecesses 1'. Thereupon the' inlay material m also of similar nature except that it may be colored as desired, is poured into the recesses r ofthe mold M', the material m and m being poured into the mould until a Vcommon level flush with the upper edge of the mould M is attained. Therevafter the upper portion of the Vmould above the mould M is filled with the plastic material m as shown infFigB, and forms a back for the inlays I, Y

Of course, this method lmay be also carried out by first filling the inlay recesses r withthe material m and thereafter filling the remaining portion'of the mould M with y the body material mto the level of the upper edge c mould M. Y

llVhen a sufficient quantity of the materials m and m have been poured into the mould, 'the upper vside of the block A. thus formed may be smoothed by means of a tool T adapted to be moved in a horizontal path over the upper edge e of the mould'M. As a final step in the operation.,after the material is set the two halves of the mouldk M may be withdrawn laterally from the block A when the dowels Dare removed from the lug L, and the block A maybe then displaced from the base B for further disposition.

Having thus described my invention, what I claim and desire to secure by Letters Patent is: A moulding device for inlaid cement blocks comprising a fiat has@ f0.1' moulding llO the face of the blocks, a body mould comblocks formed in said body mould, one of posed of separable mating sections and havthe edges of the inlay mould being flush With ing vertically disposed moulding faces on one of the edges vof said body mould, and 10 the inner sides thereof, and an inlay mould said inlay mould being of lesser depth than 5 having vertical partitions removably held said body mould for providing a substantial Y Within said body mould whereby plastic inbacking of plastic material thereabove. lays may be formedwithin the body of the ARTHUR E. PEARSON. 

